Flanging machine



May 5, 1931. G. F. SCHULENBURG FLANGING MACHNE Filed Nov. 22. 1929 o 1 is an elevation partly Patented May 5, 1931 i UNITED STATES GEORGE F. SCHULENBURG, or sr. Lo'UIsVMIssoUnI FLANGING Macallan Application med November` 22, 1929. serial No. 409,946.

4The object of my invention is make a flanging machine. Y p A still further object is Vto make a machine for making flanges on perforations in metal` 5 plates.

A still further object is to make a machine for forming anges on the peripheries of circular holes in the heads of metal barrels or drums. My machine may be equally wellused 10 in making flanges on holes of various shapes, but I have illustrated a device for making the flanges on circular openings. My machine does not concern itself with the cutting of the y hole in the metal sheet or head. My device is illustrated when operating' on the head of a metal barrel or drum. My machine dispenses withthe use of rollers and is made of few andsimple parts that lend themselves readily to multiple production. The process consists generally in punching or bending the sides of an existingholein a metalplate for .the purposeof producing an inwardly exe tending circular `iiange. v "f With these and other-objects, my invention has relation to certain novel featuresl of construction and arrangement of parts as Vwill be hereinafter more fully described, pointed out in the claims and illustrated in the drawing in which W f i in vsection of my device showing the barrel or drum in position to have a flangeformed on the cirvcularhole in the upper head.

Fig. 2 isl an end elevation of the machine shown in Fig. 1. Y Y

Fig. 3 is an enlarged sectional elevation of the flange forming elements of Ymy device, showinga portion `of the drum with the per foration therein before'the flange Vis formed U on the perforation.

Fig. 4. is a sectional elevation of theV die holder and die forming a portion ofthe flange' turning element showingitin the position that the portions of the die assume in placing' them in position, as well as showing portions of the head in cross section.

Fig. 5 is an enlarged fragmental Vsectional elevation of a portion of the head after the fiange is formed, together with a portion of the die and diefholder showing the relative positions immediately after the flange Vhas been formed. i y l Fig. 6 is a plan view of the die showing its parts in position relative to each other and around its spindle. y Numeral 7 `indicates the barrel support generally, having the base 8 and the sidemembers 9 and 10. The side members 9 andV 10v are secured together at the upper portion by means of the beams 11 and 12. Numeral nates a belt in operative connection with one Ji of the pulleys' 19, and21 designates a belt in operative connection vwith the other pul-` ley 19. The belts 2O and 21. are in operative connection with the pulley on a power source, such as a motor orengine. The belt 20is driven gin the direction ofthe arrow shown adjacent it and the belt 21 is driven in the direction of the arrow shown. adjacent it.

Thisstructure is supplied in order to 'be able to selectively rotate the drive shaft 18 in either a clockwise or. an anti-clockwise direction. By having Va sliding key in a keyway on .the Idrive shaft 18, andy corresponding slots in the pulleys 19, either. pulley may beV secured against rotation relative 4to the drive shaft 18. The pulley thatv `is not secured to the drive shaft 18 at a` particular time will be in rotating slipping engagement with the drive shaft 18. It isintended to describe conventional structure thus far. AnytWo-way clutch may be Vused in'place Vof the structure described.

Numeral 22 .designates a pinion keyed to the end of the drive' shaftV 18 protruding laterally beyond the hanger 17. 'Numen al 23 designates a shaft passing through the journal box 24 secured in theside mem ber 9 in the position showntin Fig. 1. Numeral 25 designates a -gear keyed tothe shaft-'23 external to the side member 9, so

that it will be in mesh with the pinion 22. On the inner end oi' the shaft 23 is keyed the beveled gear 26. Numeral 27 designates a vertical spindle to which is keyed the beveled gear 28, which is in mesh with the beveled gear 26. The end of the spindle 27, above the beveled gear 28, is in threaded engagement in the journal box 29. Numeral 30 designates a circular plate secured to the beam 11 by means of the screws 31.v Numeral 32 designates an annular slot ormed'in the spindle 27 near its lower end. Numeral 33 designates a circular die formed of a plurality ot segments, preferably il, as shown in Fig. Numeral 34 designates a circular die holder having a een ral hole 35 formed therein. rlhe circular die holder is secured to the spindle 27 by having the spindle 27 passing through the central hole 35 and by having the nut 36 secured by threaded engagement to the end oit the spindle 27 below the circular die holder rllie die 33 has the hole 3i' formed thereii and has the lower edges of the hole beveled upward. The die 33 is formed with the circumferential projection 38 connected with the circumferential projection 33, which two projections are connected integrally by the horizontal portion fit). On the periphery ofthe circular die holder 3 is formed the annular projection 41. lt w`ll be seen that by this construction that the die 33 can be titted into the circular die holder 34 as snown in the drawing, the die being` et such thickness that its end may project into the annular slot 32. The upper end of the annular prejection l-l ot the circular die holde 1 supports the horizontal portion l0 of the die 33. The spindle 27 at its upper end is externally threaded and in mesh with threads in the journal box 29. It will be seen that when the drive shatt 13 is driven in one direction that the spindle 27 will be moved downwardly thereby moving the die 33 and the circular die holder 34-downwardly, and'when thev drive shaft 13 is driven in the opposite direction that the die 33 and the circular die holder will be moved in the opposite direction vertically.

The operation of my device is as follows :l

The barrel 13 is positioned on the base 8 between the side members 9 and 10 centrally, as shown in Fig. 1. The spindle 27 is lowered by the application of power to the drive shaft 13 as previously Vdescribed passing the circular die holder through the hole 14; in the head 15 immediately beneath the head 15. The segments of the die 33 must now be placed manually in position in the circular die holder 3l and immediately beneath the head 1F. t is in order to enable this positioning that the die is formed in segments rather than in a single piece. It it were formed in a single piece, it would not be physically possible to position it in the hole 14, which hole, as previously described, is of lesser diameter than the diameter of the 'die 33 itself. rl`his positioning is also facilitated by reason of the upturned lower edges of the hole 37 in the die 33. -When the die 33 is in the proper position, as described, as well as having the upper face oit the circumferential projection 33 in contact with the lower sur- ;tace of the head 15, the movement of the spindle 27 upwardly is begun. rThis movementV er:` gs the peripheral edge of the circumferential plate 30 in contact with the edge oi the hole 1st. il continuation of this process bends over the peripheral edge of the hole 11i forming the flange 42', when the circumferential plate is iu the position shown in Fig. 5. lith en the flange is termed, the rotative direction et the drive shait 13 is reversed and the spindle 2T lowered thereby disengaging the die 33 and the circular die holder 34; from the head 15. lli/Then the die 33 is lowered sufficiently owing to its being in segments, the se icnts may be removed manually, the operation being tl e reverse of that performed in positioning the segments in position originally. Aller the die 33 is removed, by continuing the upward movement of the circular die holder 3l, it may be raised above the head lo and the barrel removed.

lilhat l claim and mean to secure by Letters .tent is 1. 1n a device of the character described, a spindle, .ieans ot' moving said spindle longie tudinally, a die holder secured to said spindle, a die positioned onsaid die holder, a circular plate, said plate and said die being so positioned relatively that the vertical movement of said spindle will bring said die and said circular plate in and out of trictional enga gement.

2. In a device of the character described, a barrel support, a drive shaft operatively positioned on said support, a spindle secured in said support and operatively connected to said 'drive shaft, a die holder secured to the lower end of said spindle, a die composed of a plurality of segments positioned on said die holder and around said spindle and having the inner radial ends of the segments of said die projecting within an annular slot formed on said spindle and having the lower inner edges oi the segments of said die beveled upwardly, a circular plate secured to said support around saitL spindle centrally relative to said d ie and of a diameter less than the operative diameter of said die.

ln testimony whereof I ailix my signature.

GEGRGE F. SGHULENBURG. 

